From 6f045e8a942782bbd856b903ca20e87065736b24 Mon Sep 17 00:00:00 2001
From: Siedlerchr <siedlerkiller@gmail.com>
Date: Thu, 30 May 2019 18:15:47 +0200
Subject: [PATCH] Fix field formatter throwing exception on autosave

Fixes #4958
---
 .../autocompleter/AutoCompletionTextInputBinding.java | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/main/java/org/jabref/gui/autocompleter/AutoCompletionTextInputBinding.java b/src/main/java/org/jabref/gui/autocompleter/AutoCompletionTextInputBinding.java
index 8bd97ec3b02..30ae74eff49 100644
--- a/src/main/java/org/jabref/gui/autocompleter/AutoCompletionTextInputBinding.java
+++ b/src/main/java/org/jabref/gui/autocompleter/AutoCompletionTextInputBinding.java
@@ -33,6 +33,8 @@
 import javafx.util.Callback;
 import javafx.util.StringConverter;
 
+import org.jabref.gui.util.DefaultTaskExecutor;
+
 import org.controlsfx.control.textfield.AutoCompletionBinding;
 
 /**
@@ -51,7 +53,7 @@ public class AutoCompletionTextInputBinding<T> extends AutoCompletionBinding<T>
     private AutoCompletionStrategy inputAnalyzer;
     private final ChangeListener<String> textChangeListener = (obs, oldText, newText) -> {
         if (getCompletionTarget().isFocused()) {
-            setUserInputText(newText);
+            DefaultTaskExecutor.runInJavaFXThread(() -> setUserInputText(newText)); //we need to wrap this as it is called from a non fx thread in autosave
         }
     };
     private boolean showOnFocus;
@@ -73,9 +75,9 @@ private AutoCompletionTextInputBinding(final TextInputControl textInputControl,
                                            Callback<ISuggestionRequest, Collection<T>> suggestionProvider) {
 
         this(textInputControl,
-                suggestionProvider,
-                AutoCompletionTextInputBinding.defaultStringConverter(),
-                new ReplaceStrategy());
+             suggestionProvider,
+             AutoCompletionTextInputBinding.defaultStringConverter(),
+             new ReplaceStrategy());
     }
 
     private AutoCompletionTextInputBinding(final TextInputControl textInputControl,
@@ -99,6 +101,7 @@ private AutoCompletionTextInputBinding(final TextInputControl textInputControl,
 
     private static <T> StringConverter<T> defaultStringConverter() {
         return new StringConverter<T>() {
+
             @Override
             public String toString(T t) {
                 return t == null ? null : t.toString();